This article examines the effects of the application of panel dataestimation methods on a system of equations with unbalanced panel data. Weapply pooled, random-effects, and fixed-effects estimation in three datasets: small, medium, and large farms to examine the relationship betweenfarm size and the elasticity of cotton supply with respect to cotton price.Our results indicate that the adoption of various estimation methods entailsdifferent estimated parameters both in terms of their absolute value and interms of their statistical significance. Additionally, the elasticity ofcotton supply with respect to price varies according to farm size.
